chamilo / chamilo-lms

    if (file_exists($saveDir.'/'.$filename.'.'.$extension)) {

        $i = 1;

        while (file_exists($saveDir.'/'.$filename.'_'.$i.'.'.$extension)) $i++;

        $paintFileName = $filename.'_'.$i.'.'.$extension;

        $title = $filename.'_'.$i.'.'.$extension;

    }

        $tmp_filename = $filename;

        $i = 0;

        while (file_exists($filepath.$tmp_filename.'.'.$extension)) {

            $tmp_filename = $filename.'_'.++ $i;

        }

        $filename = $tmp_filename.'.'.$extension;